1. CheckSystem 2.1 Portable Test Systems Page 1 April 2011

2. CheckSystem 2.1 Portable Test System Consists of:  Single phase, precision reference meter with high accuracy in class 0.2 or 0.05  Single phase current source in the range 1 mA... 120 A Application:  Easy verification of meters under precise load conditions, using the built-in, compact, current source  Automatic operation using predefined load points without the need of an external PC  Display of vector diagram for analysis of the supply conditions Page 2 April 2011

3.  Measurement range 10 mV... 300 V or 480 V (cl. 0.05 %)  Current source 1 mA... 120 A  Integrated working standard accuracy class 0.2 % or 0.05 %  Measurement of all electrical values  Vector diagram, Harmonic test, Data storage  Automatic test runs without external PC Options:  Clamp-on CT 10 mA … 100 A  CALSOFT Software CheckSystem 2.1 1-phase portable test system with current source Page 3 April 2011

4. Connections [1] Current output [5]Voltage Connection N [2]Current input [6]Supply from measuring voltage [3]Fuse for current connection[7]Fuse for supply voltage [4]Voltage Connection U[8] Supply mains socket Connections CheckSystem 2.1 Page 4 April 2011

5. [9] RS 232 serial line interface [13]Impulse in- / output connector [10]LCD display [14]Cursor and enter keys [11]Menu card keys [15]Alphanumeric keypad [12]Clamp-on CT 100 A connector Connections CheckSystem 2.1 Page 5 April 2011

6. Connections CheckSystem 2.1 Supply voltage connection Page 6 April 2011

7. Optional current clamps to the CheckSystem 2.1  Error compensated clamp- on CTs for measurements in the range 10 mA … 100 A, cable diameter max. 10 mm Page 7 April 2011

8. Operation Concept Symbols Display Control Elements   Page 8 April 2011

9. Software Reference – Main Menu Meter Testing  Measurement of load values  Vector diagram  Energy measurement  Basic settings  Page 9 April 2011

10. Operation Concept Status Indication Page 10 April 2011

11. Software Reference – Error Measurement Page 11 April 2011

12. Software Reference – Measurement of Load Values Page 12 April 2011

13. Software Reference – Harmonics, Vector Diagram and Wave Form Page 13 April 2011

14. Software Reference – Energy measurement and Register test Page 14 April 2011

15. Software Source – Main Menu Load Points  Page 15 April 2011

16. Software Source – Load Points Page 16 April 2011

17. Software Sequence – Main Menu Run automatic or step by step test  Create / edit test sequence  Page 17 April 2011

18. Software Sequence – Edit / Load / Save meter type Page 18 April 2011

19. Software Sequence – Edit / Load / Save test sequence Page 19 April 2011

20. Software Sequence – Automatic Test Run Page 20 April 2011

21. Software Sequence – Test steps of type energy Page 21 April 2011

22. Software Administrative data set (ADS) – Main Menu Storage position  Select function  Edit or load / save ADS  Delete results  Page 22 April 2011

23. Software ADS – Edit Customer / Meter data and other checks Page 23 April 2011

24. Software ADS – Save / View results Page 24 April 2011

25. Windows © -Software CALSOFT Selection of real time readout or readout of sets of data from CheckSystem 2.1 memory Page 25 April 2011

26. Windows © -Software CALSOFT Display of read data on PC monitor Page 26 April 2011